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All you want to know about Spanish nemerteans... and more
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January 1982 - June 2017
January 1990 - December 2008
Publications
Publications (96)
Ribbon worms (Nemertea) are a less-known group of invertebrates, specially challenging for taxonomic studies due to the scarcity of external morphological features. As a consequence, the number of known nemertean species might represent just a small fraction of the true diversity of the phylum. The present study increases the number of known ribbon...
The marine ribbon worm genus Tetranemertes Chernyshev, 1992 currently includes three species: the type species T. antonina (Quatrefages, 1846) from the Mediterranean Sea, T. rubrolineata (Kirsteuer, 1965) from Madagascar, and T. hermaphroditica (Gibson, 1982) from Australia. Seven new species are described: T. bifrost sp. nov. , T. ocelata sp. nov....
Nemerteans (also called Nemertines) are a phylum of predominantly marine worms that use toxins to capture prey and to defend themselves against predators. Hoplonemerteans have a proboscis armed with one or more stylets used in prey capture and are taxonomically divided into Order Monostilifera, whose members possess a single large proboscis stylet,...
The heteronemertean Cerebratulus marginatus Renier, 1804 is a well-known representative of the family Lineidae (Nemertea) inhabiting sandy or muddy sediments throughout the world. Due to its wide geographic distribution and the lack of distinctive external morphological features among different populations, the species has been considered cosmopoli...
Ribbon worms (Nemertea) are active predators that use a proboscis to inject toxins into prey and defend themselves with toxic epidermal mucus. Nemerteans do not have distinct multi-cellular venom glands, instead toxins are secreted by cells lining the body wall and proboscis epithelia. The lack of a distinct gland has prevented the use of tradition...
The North Atlantic deep-water polynoid worm Neopolynoe chondrocladiae is involved in an exceptional symbiotic relationship with two hosts, the carnivorous sponges Chondrocladia robertballardi and Chondrocladia virgata. While this is an obligate symbiotic relationship, its real nature is unclear. We used a multidisciplinary approach to narrow down t...
Located in the Cantabrian Sea (NE Atlantic), El Cachucho is the largest offshore Marine Protected Area (MPA) in
Spain. One of the most abundant keystone megafauna species occurring in this MPA is a yellow gorgonian of
genus Placogorgia Wright and Studer (1889), occurring in relatively high densities in steep slopes with rocky
outcrops at depths ran...
Guía fotográfica de los nemertinos recogido en la campaña realizada en 2014 en Ceuta (estrecho de Gibraltar, S España)
Photographic guide of the Nemerteans collected in the 2014 campaign in Ceuta (Strait of Gibraltar, S Spain)
The phylum Nemertea is an important component of the benthic ecosystems of the Southern Ocean, but its biodiversity is still relatively poorly known in Antarctic waters. There are few common and well-known nemertean species occurring in the shallow Antarctic waters, and these include the congeneric Antarctonemertes valida (Bürger, 1893) and Antarct...
Three species of the isopod genus Astacilla were collected off Alborán Island (SW Mediterranean Sea) within the LIFE + INDEMARES project. Twelve specimens of the rare species Astacilla carlosteroi (Reboreda, Wägele & Garmendia, 1994) were found; this species is only known as a single incomplete female from Galicia (NW Spain, Atlantic). Males, repor...
Benthic monitoring of the marine shallow bottoms off Menorca (Balearic Islands, western Mediterranean) has yielded several specimens of the leptostracan genus Paranebalia Claus, 1880. This finding constitutes the first report of the genus from European latitudes and the Mediterranean Sea and therefore the third leptostracan genus known from the Med...
Benthic monitoring of the marine shallow bottoms off Menorca (Balearic Islands, western Mediterranean) has yielded several specimens of the leptostracan genus Paranebalia Claus, 1880. This finding constitutes the first report of the genus from European latitudes and the Mediterranean Sea and therefore the third leptostracan genus known from the Med...
A literature-based taxonomic catalogue of nemerteans (phylum Nemertea) from Spain and Portugal is provided, listing 75 species (12 Palaeonemertea, 24 Pilidiophora, and 39 Hoplonemertea) belonging to 34 genera. This is a low species number compared with the approximately 400 species listed in Europe. This lack of knowledge is mainly due to the low n...
The under-rock guild of nemerteans from Lough Hyne, south-west Ireland was recorded during a long-term benthic survey of the marine reserve. From 2004 to 2014, common nemerteans were recorded annually in late summer for ten historical monitoring sites (each 10 m of shoreline); more comprehensive surveys were completed in 2012 (4126 low-intertidal t...
The heteronemertean species Micrura dellechiajei is thus far only known from its type locality in the Gulf of Naples (Italy) and has not been recorded in 120 years. During two oceanographic surveys conducted in Spanish Mediterranean waters, several nemertean specimens were collected, and thorough morphological examination indicated that some of the...
The interstitial hoplonemertean Ototyphlonemertes duplex, originally described from Naples, is collected for the first time on the Spanish Mediterranean coast at the Cabo de Gata Natural Park (Mediterranean, south-east Spain). Morphological data and pictures of this species are provided.
Dosima fascicularis (Ellis & Solander, 1786) is a stalked barnacle which capitulum bears five large plates. It is the unique barnacle that constructs its own float, a foamy mass described as similar to polystyrene, using floating items as feathers, tar balls and plastic particles as attachment surfaces (Darwin 1851; Minchin 1996; Ryan and Branch 20...
Although some clades of ribbon worms (phylum Nemertea) are consistently recovered with high support in molecular phylogenies, the placement and inter-relationships of some taxa have proven problematic. Herein, we performed molecular phylogenetic analyses aimed at resolving these recalcitrant splits, using six loci (nuclear 18S rRNA, 28S rRNA, histo...
A literature-based taxonomic catalogue of nemerteans (Phylum Nemertea) from Spanish and Portuguese waters is provided, listing 67 species (13 Paleonemertea, 20 Pilidiophora, and 34 Hoplonemertea) belonging to 32 genera. This is a low species number compared with the approximately four hundred species listed in Europe. This lack of knowledge is main...
Natatolana neglecta (Hansen, 1890) is described based on specimens collected from Galicia,
northwestern Spain (northeastern Atlantic) and compared with material from Spanish collections
and from the type locality (Naples, Mediterranean Sea). The species has rarely been recorded from
the European Atlantic as there are only a few records, but the pop...
Exposed sandy beaches are widespread coastal habitats with temporal and spatial variability. O Rostro beach (Galicia, northwest
Spain) was the most severely affected beach in the ‘Prestige’ oil spill (November 2002). Monitoring sampling was conducted
to study macroinfaunal composition and structure after the oil spill episode. The purpose of this s...
The occurrence of the hoplonemertean Emplectonema neesii in the north-east Atlantic has been reported from Iceland to France. This paper provides the first record of E. neesii in Galicia (north-west Spain), possibly the most southern location, if the previous records under this name from the Mediterranean referred to a different species. Morphologi...
The interstitial hoplonemertean Ototyphlonemertes duplex, originally described from Naples, is collected for the first time on the Spanish Mediterranean coast at the Cabo de Gata Natural Park (Mediterranean, south-east Spain). Morphological data and pictures of this species are provided.
Nemerteans (ribbon worms) constitute an abundant and occasionally conspicuous group of benthic invertebrates in the Southern Ocean. Although recent work has confirmed that this group is far more diverse than previously recognized, the Antarctic nemertean fauna remains poorly understood when compared to other geographic regions. In most cases, the t...
The exposed sandy beach of Ladeira (Corrubedo Bay, NW Spain) was sampled during seven years (2003–2009) after the Prestige oil spill (winter 2002–03), to determine interannual variations in the macroinfaunal community in two ways: (i) through ecological indices (species richness and abundances, Shannon’s diversity and Pielou’s evenness) and (ii) th...
Los nemertinos no han sido nunca muy populares en los estudios bentónicos, siendo frecuente que aparezcan en los listados faunísticos determinados únicamente a nivel de filo, como Nemertea sp, Nemertini spp u otras variantes onomásticas. Esta falta de interés por su filiación específica se debe a las dificultades que entraña su determinación. Son a...
2012). A new marine isopod from Canary Islands: Idotea metallica Bosc, 1802 (Isopoda: Valvifera: Idoteidae). VIERAEA 40: 149-150. El isópodo Idotea metallica Nosc, 1802 es un crustáceo que forma parte del macro-zooplancton ya que se encuentra de forma casi exclusiva sobre objetos flotantes y, por tanto, presenta una distribución neustónica (Abelló...
The phylogenetic relationships of selected members of the phylum Nemertea are explored by means of six markers amplified from the genomic DNA of freshly collected specimens (the nuclear 18S rRNA and 28S rRNA genes, histones H3 and H4, and the mitochondrial genes 16S rRNA and cytochrome c oxidase subunit I). These include all previous markers and re...
A new paranthurid isopod, Paranthura santiparrai sp. nov. is described from specimens collected in the 'El Cachucho' Marine Protected Area, southern Bay of Biscay. The new species can be distinguished from all the known species of the genus Paranthura by the absence of eyes, from the native NE Atlantic species Paranthura nigropunctata and Paranthur...
The hoplonemertean Vieitezia luzmurubeae, gen. et sp. nov. is described from specimens collected in a national park on the north-west Iberian Peninsula, the Parque Nacional Marítimo-Terrestre das Illas Atlánticas de Galicia. The species, previously mistaken as the Mediterranean species Tetrastemma vittigerum (Bürger, 1904), is frequently associated...
Se exponen los resultados del estudio de la fauna de isópodos recogidos en las islas Chafarinas (Mediterráneo occidental) durante los años 1991, 1992 y 1993. Los 2 556 ejemplares de isópodos incluidos en 56 muestras pertenecen a 13 géneros y 24 especies, cinco de las cuales constituyen primeras citas para España: Gnathia illepida (Wagner, 1869); G....
The nemertean Lineus acutifrons Southern (191333.
Southern , R. 1913 . Nemertinea . Proc R Ir Acad. , 31 : 1 – 20 . View all references) is a species rarely encountered in sandy beaches of Europe and is only really known from its original and short description. This species has been found almost a century later in Galician sandy beaches (northwest...
The Islas Atlánticas de Galicia National Park (NW Spain), is home to a wide diversity of Nemertean species.
Intertidally and subtidally sampling campaigns were made in all archipelagos of the National Park and adjacent coast from 2005 to 2009 to provide the list of these species. Twenty-five species of nemerteans are identified, the half of all spe...
A checklist of the marine isopod fauna from the Macaronesian archipelagos is presented. A total of 62 species, belonging to 26 families are known. Geographic distributions are indicated for each species, and for some, comments are included on certain aspects. Se presenta el catálogo de las especies de crustáceos isópodos marinos de los archipiélago...
This study describes the macrofauna of the three beaches situated in central Gulf of Gabès (Tunisia): Ouderef, Gabès and Zarrat. The Gulf of Gabès has the largest tides in the Mediterranean and the beaches showed a wide intertidal zone. The beaches were sampled once during the spring low tides of June 2005. A transect was extended at each beach, fr...
A new species of monostiliferoidean nemertean, Tetrastemmafozensis, from the mantle cavity of the bivalve mollusc Scrobicularia plana, in the Ría de Foz, north-western Spain, is described and illustrated. Other nemerteans from the mantle cavity of Scrobicularia collected in Poole Harbour, southern England, are provisionally identified as conspecifi...
Nemerteans have been recorded in several studies of the sandy beaches, but usually these specimens have been only regarded as members of the Phylum, with no attempt at identification at any taxonomic level. This lack of identification is partly because of the sampling procedures used to collect beach macroinfauna. Nemerteans are fragile and need sp...
A checklist of the marine isopod fauna from the Macaronesian archipelagos is presented. A total of 62 species, belonging to 26 families are known. Geographic distributions are indicated for each species, and for some, comments are included on certain aspects.
In most nemertean species, members of the two sexes aggregate before fertilization takes place. Few specific studies on the mating behaviour of nemerteans have been conducted but several observational reports indicate that important processes known from other organisms, such as sexual selection and sperm competition, may also be at work in nemertea...
Synisoma
albertoi sp. nov. (Isopoda: Valvifera: Idoteidae), is described and illustrated from specimens collected in the Strait of Gibraltar (southern Spain). The new species can be distinguished from all other species of the genus, with the exception of S.
bellonae and S.
raqueliae, by the fusion of the flagellar articles of the antenna. It is eas...
On 13th September 2002, the oil tanker “Prestige” sunk off the Galician coast, causing one of the most important oil spills in history, which affected the entire coastline, particularly the exposed rocky shores and sandy beaches.Seventeen exposed sandy beaches were analysed along the Galician coast, in May 2003, and results were compared with previ...
Eighteen sandy beaches were sampled along the 1659 km of the Galician coast (NW Spain) six months after the Prestige oil-spill to study the impact of the fuel and the clean-up activities on the macroinfauna community. A transect was extended at each beach, from above the drift line to below the swash line at five sampled levels; at each level six 0...
The changes in the cartography of surface sediments of the Ría de Foz (Northwest Spain), after the construction of a jetty in the mouth of the estuary are analysed in this work. A comparison of 2002 versus 1984-1985 cartography shows changes in the inner sandy banks of the Ría, with an increase of the pelitic and organic matter contents of the sedi...
Se analizan los cambios ocurridos en las comunidades bentónicas de la ría de Foz (Lugo) (noroeste de España) tras la construcción de un espigón en la boca del estuario, comparándose la situación del año 2002 con la existente en 1984-1985. Si bien persisten en la ría las tres comunidades bentónicas detectadas en el estudio previo, se observan cambio...
Se presenta el catálogo de las especies de crustáceos isópodos marinos de la península Ibérica y las islas Baleares (Illes Balears). En él se recogen las citas incluidas en el área de una franja marina de 100 km de anchura a lo largo del perfil de la costa. El listado abarca, en total, 220 especies pertenecientes a 39 familias. Además, se detalla l...
Long-term changes in the benthos of Spain's coastal waters are still largely unknown. The present paper compares data from January 2002 taken in the ría de Foz (northwest Spain) with the results of a study conducted in 1984-1985, in order to detect possible changes in benthic macrofauna (species composition, abundance, distribution and benthic asse...
A checklist of marine isopod fauna from the Iberian Peninsula and Balearic Islands is presented. Published records were compiled for specimens cited a maximum 100 km from the coast. A total of 220 species from 39 families are presently known. The geographic distribution for each species is also included, along with other comments.
We present an extensive study on the isopod fauna of the Chafarinas Islands (west Mediterranean). A total of 2 556 specimens, comprising 13 genera and 24 species, was collected from 56 samples during 1991, 1992 and 1993. Five species are the first record for Spain: Gnathia illepida (Wagner, 1869); G. inopinata Monod, 1925; Carpias stebbingi Monod,...
Three specimens of the genus Arcturella (Crustacea: Isopoda: Valvifera: Arcturidae) were collected in the oceanographic expedition FAUNA I (S Spain). The specimens are fully described and illustrated, and a new species, Arcturella estherae sp. nov., is established. The two female specimens of this new species can be distinguished from all other spe...
Crustacean Isopods from the oceanographic expedition Fauna I (southern Iberian Peninsula) This paper presents an extensive study on the isopod fauna from the oceanographic expedition Fauna I in the Straits of Gibraltar and the Alborán Sea (southern Iberian Peninsula), during which 871 specimens were col- lected from 37 samples. These belonged to 34...
This paper presents an extensive study on the isopod from the oceanographic expedition Fauna I in the Straits of Gibraltar and the Alborán Sea (southern Iberian Peninsula), during which 871 specimens were collected from 37 samples. These belonged to 34 genera and 55 species; 17 species are new to the Iberian Peninsula: Gnathia dentata (Sars, 1872);...
Junoy, J., Montalvo, S., Roldán, C. and García-Corrales, P. 2000. Ultrastructural study of the bacillary, granular and mucoid proboscidial gland cells of Riseriellus occultus (Nemertini, Heteronemertini). — Acta Zoologica (Stockholm) 81: 235–242.
The ultrastructure of six types (G5-G10) of proboscidial gland cells whose cell necks emerge independen...
Synisoma raquelae sp. nov. (Isopoda: Valvifera: Idoteidae), is described from the Strait of Gibraltar and the Alboran Sea (western Mediterranean). The new species can be distinguished from all others species of the genus, with the exception of S. bellonae, by the fusion of the flagellar articles of the antenna. S. raquelae is best distinguishable f...
A viviparous hoplonemertean, Prosorhochmus chafarinensis sp. nov., is described from the Chafarinas Islands (western Mediterranean). The species lives in the low eulittoral under the encrusting alga Lithophyllum lichenoides. Prosorhochmus chafarinensis is compared and contrasted in detail with the other valid members of the genus, P. claparedii fro...
Two different types of glandular system in the proboscidial epithelium of Riseriellus occultus have been investigated by transmission electron microscopy. As expected, most of the epithelial cells are glandular in nature.
With regard to differences in the ultrastructure of these gland cells and in the formation and morphology of their secretory
gr...
We have examined with transmission electron microscopythe epithelial layer exposed to the rhynchocoel fluidof the proboscis in the heteronemertine Riseriellus occultus. This epithelium is organized asa monociliated, pseudostratified myoepitheliumconsisting of two cell types: apically situatedmonociliated supportive cells and subapical myocyteslacki...
Only one sensory cell type has been observed within the glandular epithelium of the proboscis in the heteronemertine Riseriellus occultus. These bipolar cells are abundant and scattered singly throughout the proboscis length. The apical surface of each dendrite bears a single cilium enclosed by a ring of six to eight prominent microvilli. The ciliu...
Only one sensory cell type has been observed within the glandular epithelium of the proboscis in the heteronemertine Riseriellus occultus. These bipolar cells are abundant and scattered singly throughout the proboscis length. The apical surface of each dendrite bears a single cilium enclosed by a ring of six to eight prominent microvilli. The ciliu...
The anoplan order Heteronemertea, particularly the genera Cerebratulus, Lineus and Micrura, contains a very large number of nominate species, many of which are inadequately described. As a consequence, systematic
difficulties are encountered with the identification of many taxa in this group, especially those originally established primarily
on the...
The abundance and dominance of the major taxonomic groups (polychaetes, molluscs, crustaceans and other groups) of the macrobenthic (>1 mm) fauna of the intertidal soft-bottom in Ria de Foz was investigated. The estuary can be divided into five distinct habitats characterized by the nature of their sediments, tidal level, degree of exposure and pre...
Palabras clave: Macrofauna, intermareal, sustrato blando, playa, costa de Lugo, Galicia. RESUMEN En el presente trabajo se estudia la macrofauna (> 1 mm) intermareal de sustrato blando de las Playas de Area Longa, Peizas y Anguieira y Altar, situadas en la costa de Lugo (Galicia, NW España). En estas playas se distinguen cuatro grupos faunís-ticos...
The community structure of the macrobenthic (>1 mm) fauna of an intertidal soft-bottom estuary, the Ra de Foz (Galicia, Northwest Spain) was investigated on 99 occasions during June, September and December 1984 and March 1985. The infaunal data were subjected to classification and ordination techniques. The analyses indicated that sediment characte...
Crustacea, Isopoda) en la Ría de Foz (Lugo, España) ldotea chelipes (Pallas, 1966) (Crustacea, Isopoda) in the Ría de Foz (Lugo, Spain) Juan Junoy (*) y José Manuel Viéitez (*) PALAIIRASCLAVE: ldotca chclipes, Zostera noltii, reproducción, intermareal, macrozoobentos, Ría de Foz. KEY WOROS: ldotea chelipes, Zoslera noltii, reproduction , intertidal...
RESUMEN El estudio de la cartografía de los sedimentos superficiales de la Ría de Foz (Lugo) se realizó mediante el análisis granulométrico y del contenido en materia orgánica de 99 muestras provenientes de 41 estaciones distribuidas por toda la Ría. La distribución de las distintas fracciones sedimentarias pone de manifiesto un gradiente de enriqu...
